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GK-1 and Siemens 7308 Gold Pin valves or sale in Trading Post

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Wow, that is the GK1 no question! I remember doing that project, it was 2002 with Darl Singh in NZ using Skype. It was 14 years back when I was 50 years old! Ah, those were the days......

Good luck Mark, I hope you sell it very quickly. It was a wonderful preamp. I did try to better it about five years back with the GK2, but interesting I could NOT improve on the tube output stage. It stayed just the same; same operating points, same tube, same transformer. Only the SS input stage was changed.

Cheers,

Hugh